production
Unit testing, performance optimization, security implementation, Play Store deployment.
What this skill does
# Production Quality Skill
## Quick Start
### Unit Testing
```kotlin
@Test
fun loadUser_updates_state() = runTest {
val user = User(1, "John")
val mockRepo = mockk<UserRepository>()
coEvery { mockRepo.getUser(1) } returns user
val viewModel = UserViewModel(mockRepo)
viewModel.loadUser(1)
assertEquals(user, viewModel.state.value)
}
```
### Security
```kotlin
// Encrypted storage
val prefs = EncryptedSharedPreferences.create(context, "secret",
MasterKey.Builder(context).build(), AES256_SIV, AES256_GCM)
// SSL pinning
CertificatePinner.Builder()
.add("api.example.com", "sha256/...").build()
```
### Play Store Deployment
```bash
./gradlew bundleRelease
# Upload to Google Play Console
# Monitor crashes and ratings
```
## Key Concepts
### Testing
- Unit tests (70-80% coverage)
- Integration tests
- UI tests with Espresso
- Mock external dependencies
### Performance
- ANR prevention
- Memory leak detection
- 60 FPS target
- Battery optimization
### Security
- Data encryption
- HTTPS/SSL pinning
- Permission handling
- OWASP Top 10
### Deployment
- Internal → Closed → Open → Production
- Staged rollout strategy
- Crash analytics monitoring
- User rating management
## Best Practices
✅ Write comprehensive tests
✅ Profile regularly
✅ Implement security features
✅ Monitor production apps
✅ Use staged rollouts
## Resources
- [Testing Guide](https://developer.android.com/training/testing)
- [Security & Privacy](https://developer.android.com/privacy-and-security)
- [Play Console Help](https://support.google.com/googleplay)
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